Meson instead of Make

1.1.0

.github/workflows/docs.yml

@@ -0,0 +1,41 @@
+name: Deploy documentation
+
+on:
+  push:
+    branches: ["main"]
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: 'true'
+      - name: Setup Pages
+        uses: actions/configure-pages@v5
+      - name: Install Doxygen
+        run: |
+          wget https://github.com/doxygen/doxygen/releases/download/Release_1_12_0/doxygen-1.12.0.linux.bin.tar.gz
+          tar -xf doxygen-1.12.0.linux.bin.tar.gz
+      - name: Generate docs
+        run: ./doxygen-1.12.0/bin/doxygen
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: 'doc/html'
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

.gitignore

@@ -1,47 +1,2 @@
-# ---> C++
-# Prerequisites
-*.d
-
-# Compiled Object files
-*.slo
-*.lo
-*.o
-*.obj
-
-# Precompiled Headers
-*.gch
-*.pch
-
-# Compiled Dynamic libraries
-*.so
-*.dylib
-*.dll
-
-# Fortran module files
-*.mod
-*.smod
-
-# Compiled Static libraries
-*.lai
-*.la
-*.a
-*.lib
-
-# Executables
-*.exe
-*.out
-*.app
-
-# Bazel
-bazel-*
-*.bazel*
-WORKSPACE.bazel
-BUILD.bazel
-
-# Dirs
-bin
-obj
-lib
-
-# IDE
-.vscode
+build*
+.cache

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "distrib/arch"]
+	path = distrib/arch
+	url = https://aur.archlinux.org/libbasen.git
+[submodule "deps/doxygen-awesome-css"]
+	path = deps/doxygen-awesome-css
+	url = https://github.com/jothepro/doxygen-awesome-css.git

AUTHORS

@@ -0,0 +1,5 @@
+libbasen project authors:
+
+commits | username
+     90 | vSEK1RO
+

LICENSE

@@ -1,9 +1,165 @@
-MIT License
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
 
-Copyright (c) 2024 sek1ro
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
 
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
+       system, and (b) will operate properly with a modified version
+       of the Library that is interface-compatible with the Linked
+       Version.
+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.

Makefile

@@ -1,123 +0,0 @@
--l =
-
-SHARED ?= false
-DEBUG ?= false
-USRDIR ?= /usr
-
-.PHONY: build i install uni uninstall\
-		tools library tests clean
-
-LIB = base
-OBJS =\
-	hex\
-	baseN\
-	base64\
-	hash/sha256\
-
-TOOLS =\
-
-TESTS =\
-	test-hex\
-	test-baseN\
-	test-base64\
-	hash/test-sha256\
-
-ifeq (${origin CC}, default)
-CC = g++
-endif
-
-CFLAGS = -std=c++23 -Wall -Wextra -Werror -Wno-unused-result -fPIC
-
-ifneq (${DEBUG}, false)
-CFLAGS += -fsanitize=address,undefined -g -O0
--g = -g
-else
-CFLAGS += -O3
-endif
-
-ifneq (${SHARED}, false)
-CFLAGS += -Xlinker -rpath=${LIBDIR}
--lLIB = -l:lib${LIB}${-g}.so
-else
--lLIB = -l:lib${LIB}${-g}.a
-endif
-
-SRCDIR = src
-INCDIR = include
-OBJDIR = obj
-BINDIR = bin
-LIBDIR = lib
-TESTDIR = test
-USRLIB = ${USRDIR}/lib
-USRBIN = ${USRDIR}/bin
-USRINC = ${USRDIR}/include
-DIRS =\
-	${BINDIR}\
-	${BINDIR}/hash\
-	${OBJDIR}\
-	${OBJDIR}/hash\
-	${LIBDIR}\
-
-build: library tools
-
-i: install
-install:\
-	build\
-	${USRINC}/${LIB}.hpp\
-	${patsubst %, ${USRINC}/${LIB}/%.hpp, ${OBJS}}\
-	${patsubst %, ${USRLIB}/lib${LIB}${-g}%, .so .a}\
-	${patsubst %, ${USRBIN}/%${-g}, ${TOOLS}}
-
-uni: uninstall
-uninstall:
-	rm -f ${USRINC}/${LIB}.hpp
-	rm -f ${patsubst %, ${USRINC}/${LIB}/%.hpp, ${OBJS}}
-	rm -f ${patsubst %, ${USRLIB}/lib${LIB}${-g}%, .so .a}
-	rm -f ${patsubst %, ${USRBIN}/%${-g}, ${TOOLS}}
-
-clean:
-	rm -rf ${OBJDIR}/* ${LIBDIR}/* ${BINDIR}/*
-
-ifneq (${OBJS},)
-
-library: ${DIRS} ${patsubst %, ${LIBDIR}/lib${LIB}${-g}%, .so .a}
-
-${OBJDIR}/%${-g}.o: ${SRCDIR}/%.cpp ${INCDIR}/${LIB}/%.hpp
-	${CC} -o $@ -c $< -I${INCDIR} ${-l} ${CFLAGS}
-
-${LIBDIR}/lib${LIB}${-g}.so: ${patsubst %, ${OBJDIR}/%${-g}.o, ${OBJS}}
-	${CC} -shared -o $@ $^ 
-
-${LIBDIR}/lib${LIB}${-g}.a: ${patsubst %, ${OBJDIR}/%${-g}.o, ${OBJS}}
-	ar rcs $@ $^
-
-${USRINC}/%: ${INCDIR}/%
-	install -Dm644 $< $@
-
-${USRLIB}/lib${LIB}${-g}%: ${LIBDIR}/lib${LIB}${-g}%
-	install -Dm755 $< $@
-
-endif
-ifneq (${TOOLS},)
-
-tools: library ${DIRS} ${patsubst %, ${BINDIR}/%${-g}, ${TOOLS}}
-
-${BINDIR}/%${-g}: ${SRCDIR}/%.cpp ${patsubst %, ${OBJDIR}/%${-g}.o, ${OBJS}}
-	${CC} -o $@ $< -I${INCDIR} -L${LIBDIR} ${-l} ${-lLIB} ${CFLAGS}
-
-${USRBIN}/%${-g}: ${BINDIR}/%${-g}
-	install -Dm755 $< $@
-
-endif
-ifneq (${TESTS},)
-
-tests: library ${DIRS} ${patsubst %, ${BINDIR}/%${-g}, ${TESTS}}
-	${patsubst %, ./${BINDIR}/%${-g};, ${TESTS}}
-
-${BINDIR}/%${-g}: ${TESTDIR}/%.cpp ${patsubst %, ${OBJDIR}/%${-g}.o, ${OBJS}}
-	${CC} -o $@ $< -I${INCDIR} -L${LIBDIR} ${-l} ${-lLIB} -lgtest ${CFLAGS}
-
-endif
-
-${DIRS}:
-	mkdir $@

README.md

@@ -1,3 +1,74 @@
-# libbase
+# libbasen
 
-encoding/decoding from arbitrary base
+c++20 encoding/decoding from arbitrary base
+
+<a href="https://repology.org/project/libbasen/versions">
+    <img src="https://repology.org/badge/tiny-repos/libbasen.svg" alt="Packaging status">
+</a>
+<a href="https://repology.org/project/libbasen/versions">
+    <img src="https://repology.org/badge/latest-versions/libbasen.svg" alt="latest packaged version(s)">
+</a>
+
+## Contents
+
+- [Installation](#installation)
+    - [Package](#package)
+    - [Meson](#meson)
+- [Documentation](#documentation)
+- [Usage](#usage)
+- [Contributing](#contributing)
+
+## Installation
+
+### Package
+
+[![Packaging status](https://repology.org/badge/vertical-allrepos/libbasen.svg)](https://repology.org/project/libbasen/versions)
+
+### Meson
+
+For cli tool you should have [argparse](https://github.com/p-ranav/argparse) as make dependency.
+
+```
+meson setup build --buildtype=release
+cd build
+meson install
+```
+
+## Documentation
+
+Available [here](https://vsek1ro.github.io/libbasen)
+
+## Usage
+
+libbasen package provides `basen` cli tool. Below are examples of use:
+```
+echo "hello world" | basen -t hex > encoded.data
+basen -t hex -d < encoded.data > decoded.data
+echo "arbitrary alphabet" | basen -a "0123ABCD"
+```
+
+## Contributing
+
+Main branch is under protection rules, so you should create pull request. After merging will be runned [authors.sh](https://github.com/vSEK1RO/libbasen/blob/main/authors.sh) for adding all contributors usernames and their number of commits to [AUTHORS](https://github.com/vSEK1RO/libbasen/blob/main/AUTHORS) file.
+
+Now we would like to implement the following features:
+- Base32
+- BCH
+- Bech32
+
+For build with with debug flags:
+```
+meson setup build-dev -Db_coverage=true
+cd build-dev
+meson compile
+```
+For build tests (needed gtest package as dependency):
+```
+meson test
+```
+For generating coverage:
+```
+ninja coverage
+```
+
+[⬆️ Contents](#contents)

authors.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+_D="$HOME/.cache/bash/deps.sh"; mkdir -p "$(dirname "$_D")" && [[ ! -f $_D ]] && wget -qO "$_D" https://static.sek1.ro/libs-bash/deps/index.sh; source "$_D"
+deps_source https://static.sek1.ro/libs-bash/dist/
+
+dist_github_authors vSEK1RO libbasen > AUTHORS

config.hpp.in

@@ -0,0 +1 @@
+#define BASEN_VER_STR "@ver_str@"

header.html

@@ -0,0 +1,87 @@
+<!-- HTML header for doxygen 1.12.0-->
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="$langISO">
+<head>
+<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
+<meta http-equiv="X-UA-Compatible" content="IE=11"/>
+<meta name="generator" content="Doxygen $doxygenversion"/>
+<meta name="viewport" content="width=device-width, initial-scale=1"/>
+<!--BEGIN PROJECT_NAME--><title>$projectname: $title</title><!--END PROJECT_NAME-->
+<!--BEGIN !PROJECT_NAME--><title>$title</title><!--END !PROJECT_NAME-->
+<!--BEGIN PROJECT_ICON-->
+<link rel="icon" href="$relpath^$projecticon" type="image/x-icon" />
+<!--END PROJECT_ICON-->
+<link href="$relpath^tabs.css" rel="stylesheet" type="text/css"/>
+<!--BEGIN DISABLE_INDEX-->  
+  <!--BEGIN FULL_SIDEBAR-->
+<script type="text/javascript">var page_layout=1;</script>
+  <!--END FULL_SIDEBAR-->
+<!--END DISABLE_INDEX-->
+<script type="text/javascript" src="$relpath^jquery.js"></script>
+<script type="text/javascript" src="$relpath^dynsections.js"></script>
+<!--BEGIN COPY_CLIPBOARD-->
+<script type="text/javascript" src="$relpath^clipboard.js"></script>
+<!--END COPY_CLIPBOARD-->
+$treeview
+$search
+$mathjax
+$darkmode
+<link href="$relpath^$stylesheet" rel="stylesheet" type="text/css" />
+$extrastylesheet
+  <script type="text/javascript" src="$relpath^doxygen-awesome-darkmode-toggle.js"></script>
+  <script type="text/javascript" src="$relpath^doxygen-awesome-fragment-copy-button.js"></script>
+  <script type="text/javascript">
+      DoxygenAwesomeDarkModeToggle.init()
+      DoxygenAwesomeFragmentCopyButton.init()
+  </script>
+</head>
+<body>
+<!--BEGIN DISABLE_INDEX-->
+  <!--BEGIN FULL_SIDEBAR-->
+<div id="side-nav" class="ui-resizable side-nav-resizable"><!-- do not remove this div, it is closed by doxygen! -->
+  <!--END FULL_SIDEBAR-->
+<!--END DISABLE_INDEX-->
+
+<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
+
+<!--BEGIN TITLEAREA-->
+<a href="https://github.com/vSEK1RO/libbasen" class="github-corner" aria-label="View source on GitHub"><svg width="80" height="80" viewBox="0 0 250 250" style="fill: #4779ac; color:#151513; position: absolute; top: 0; border: 0; right: 0;" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>
+<div id="titlearea">
+<table cellspacing="0" cellpadding="0">
+ <tbody>
+ <tr id="projectrow">
+  <!--BEGIN PROJECT_LOGO-->
+  <td id="projectlogo"><img alt="Logo" src="$relpath^$projectlogo"$logosize/></td>
+  <!--END PROJECT_LOGO-->
+  <!--BEGIN PROJECT_NAME-->
+  <td id="projectalign">
+   <div id="projectname">$projectname<!--BEGIN PROJECT_NUMBER--><span id="projectnumber">&#160;$projectnumber</span><!--END PROJECT_NUMBER-->
+   </div>
+   <!--BEGIN PROJECT_BRIEF--><div id="projectbrief">$projectbrief</div><!--END PROJECT_BRIEF-->
+  </td>
+  <!--END PROJECT_NAME-->
+  <!--BEGIN !PROJECT_NAME-->
+   <!--BEGIN PROJECT_BRIEF-->
+    <td>
+    <div id="projectbrief">$projectbrief</div>
+    </td>
+   <!--END PROJECT_BRIEF-->
+  <!--END !PROJECT_NAME-->
+  <!--BEGIN DISABLE_INDEX-->
+   <!--BEGIN SEARCHENGINE-->
+     <!--BEGIN !FULL_SIDEBAR-->
+    <td>$searchbox</td>
+     <!--END !FULL_SIDEBAR-->
+   <!--END SEARCHENGINE-->
+  <!--END DISABLE_INDEX-->
+ </tr>
+  <!--BEGIN SEARCHENGINE-->
+   <!--BEGIN FULL_SIDEBAR-->
+   <tr><td colspan="2">$searchbox</td></tr>
+   <!--END FULL_SIDEBAR-->
+  <!--END SEARCHENGINE-->
+ </tbody>
+</table>
+</div>
+<!--END TITLEAREA-->
+<!-- end header part -->

include/base.hpp

@@ -1,4 +0,0 @@
-#include <base/hex.hpp>
-#include <base/baseN.hpp>
-#include <base/base64.hpp>
-#include <base/hash/sha256.hpp>

include/base/base64.hpp

@@ -1,21 +0,0 @@
-#pragma once
-
-#include <cstdint>
-#include <span>
-#include <string>
-#include <vector>
-
-namespace base64
-{
-    bool isValid(const char *str, uint64_t str_size) noexcept;
-    bool isValid(std::string_view str) noexcept;
-
-    uint64_t sizeEncoded(std::span<const uint8_t> data);
-    uint64_t sizeDecoded(std::string_view str) noexcept;
-
-    void encode(const uint8_t *data, uint64_t data_size, char *str, uint64_t str_size);
-    std::string encode(std::span<const uint8_t> data) noexcept;
-
-    void decode(const char *str, uint64_t str_size, uint8_t *data, uint64_t data_size);
-    std::vector<uint8_t> decode(std::string_view str) noexcept;
-}

include/base/baseN.hpp

@@ -1,21 +0,0 @@
-#pragma once
-
-#include <cstdint>
-#include <span>
-#include <string>
-#include <vector>
-
-namespace baseN
-{
-    bool isValid(const char *str, uint64_t str_size, const int8_t *map) noexcept;
-    bool isValid(std::string_view str, const int8_t *map) noexcept;
-
-    uint64_t sizeEncoded(std::span<const uint8_t> data, uint8_t base);
-    uint64_t sizeDecoded(std::string_view str, uint8_t base) noexcept;
-
-    void encode(const uint8_t *data, uint64_t data_size, char *str, uint64_t str_size, uint8_t base, const char *digits);
-    std::string encode(std::span<const uint8_t> data, uint8_t base, const char *digits) noexcept;
-
-    void decode(const char *str, uint64_t str_size, uint8_t *data, uint64_t data_size, uint8_t base, const char *digits, const int8_t *map);
-    std::vector<uint8_t> decode(std::string_view str, uint8_t base, const char *digits, const int8_t *map) noexcept;
-}

include/base/hex.hpp

@@ -1,21 +0,0 @@
-#pragma once
-
-#include <cstdint>
-#include <span>
-#include <string>
-#include <vector>
-
-namespace hex
-{
-    bool isValid(const char *str, uint64_t str_size) noexcept;
-    bool isValid(std::string_view str) noexcept;
-
-    uint64_t sizeEncoded(std::span<const uint8_t> data);
-    uint64_t sizeDecoded(std::string_view str) noexcept;
-
-    void encode(const uint8_t *data, uint64_t data_size, char *str, uint64_t str_size);
-    std::string encode(std::span<const uint8_t> data) noexcept;
-
-    void decode(const char *str, uint64_t str_size, uint8_t *data, uint64_t data_size);
-    std::vector<uint8_t> decode(std::string_view str) noexcept;
-}

include/basen.hpp

@@ -0,0 +1,7 @@
+#include <basen/base58.hpp>
+#include <basen/base64.hpp>
+#include <basen/baseN.hpp>
+#include <basen/Exception.hpp>
+#include <basen/hash/sha256.hpp>
+#include <basen/hex.hpp>
+

include/basen/Exception.hpp

@@ -0,0 +1,43 @@
+#pragma once
+
+#include <exception>
+#include <source_location>
+#include <string>
+#include <unordered_map>
+
+namespace basen
+{
+    class Exception : public std::exception
+    {
+    public:
+        enum class Code
+        {
+            BASE,
+            PADDING,
+            CHECKSUM,
+            OVERFLOW,
+            LENGTH,
+            OUT_OF_ALPH,
+            ALPH_COLLISION
+        };
+        static const std::unordered_map<Code, std::string> messages;
+
+        Exception(Code code, const std::source_location &location = std::source_location::current());
+        const char *what() const noexcept override
+        {
+            return _what.c_str();
+        }
+        inline const char *message() const noexcept
+        {
+            return messages.at(_code).c_str();
+        }
+        inline Code code() const noexcept
+        {
+            return _code;
+        }
+
+    private:
+        Code _code;
+        std::string _what;
+    };
+}

include/basen/base58.hpp

@@ -0,0 +1,84 @@
+#pragma once
+
+#include <cstdint>
+#include <span>
+#include <string>
+#include <vector>
+
+namespace base58
+{
+    /**
+     * @brief bitcoin alphabet
+     */
+    extern const char digits[59];
+    extern const uint8_t map[256];
+
+    /**
+     * @return checks what contains only alphabet chars
+     * @warning doesn't validate checksum, use decodeCheck instead
+     */
+    bool isValid(const char *str, size_t str_size) noexcept;
+    /**
+     * @param str string or string_view which you want to decode
+     * @return checks what contains only alphabet chars
+     * @warning doesn't validate checksum, use decodeCheck instead
+     */
+    bool isValid(std::string_view str) noexcept;
+
+    /**
+     * @param data vector or span of data which you want to encode
+     * @return estimated size after encoding (for non-powers of two it is obviously larger)
+     * @throw basen::Exception(OVERFLOW) from baseN::sizeEncoded
+     */
+    size_t sizeEncoded(std::span<const uint8_t> data);
+    /**
+     * @param str string or string_view which you want to decode
+     * @return estimated size after decoding (for non-powers of two it is obviously larger)
+     */
+    size_t sizeDecoded(std::string_view str) noexcept;
+
+    /**
+     * @param data [in] pointer to data which you want encode
+     * @param str [out] pointer to string for encoded data output
+     * @return number of leading chars, which should be trimmed
+     * @throw basen::Exception(OVERFLOW) from base58::sizeEncoded
+     * @warning contain leading zeros, returns count of them
+     */
+    size_t encode(const uint8_t *data, size_t data_size, char *str, size_t str_size);
+    /**
+     * @param data vector or span of data which you want to encode
+     * @return encoded string
+     * @throw basen::Exception(OVERFLOW) from base58::sizeEncoded
+     */
+    std::string encode(std::span<const uint8_t> data);
+
+    /**
+     * @param str [in] pointer to string which you want decode
+     * @param data [out] pointer to data for encoded string output
+     * @return number of leading chars, which should be trimmed
+     * @throw basen::Exception(OUT_OF_ALPH) from baseN::decode
+     * @warning contain leading zeros, returns count of them
+     */
+    size_t decode(const char *str, size_t str_size, uint8_t *data, size_t data_size);
+    /**
+     * @param str string or string_view which you want to decode
+     * @return decoded data
+     * @throw basen::Exception(OUT_OF_ALPH) from baseN::decode
+     */
+    std::vector<uint8_t> decode(std::string_view str);
+
+    /**
+     * @param data vector or span of data which you want to encode
+     * @return encoded string + 4 first bytes of double sha256
+     * @throw basen::Exception(OVERFLOW) from base58::encode
+     */
+    std::string encodeCheck(std::span<const uint8_t> data);
+    /**
+     * @param str encoded string or string_view + 4 first bytes of double sha256
+     * @return decoded data without 4 first bytes of double sha256
+     * @throw basen::Exception(OUT_OF_ALPH) from base58::decode
+     * @throw basen::Exception(PADDING) if str size < 4
+     * @throw basen::Exception(CHECKSUM) if checksum incorrect
+     */
+    std::vector<uint8_t> decodeCheck(std::string_view str);
+}

include/basen/base64.hpp

@@ -0,0 +1,66 @@
+#pragma once
+
+#include <cstdint>
+#include <span>
+#include <string>
+#include <vector>
+
+namespace base64
+{
+    extern const char digits[65];
+    extern const uint8_t map[256];
+
+    /**
+     * @return checks what contains only alphabet chars and ends with no more than two '=' chars
+     */
+    bool isValid(const char *str, size_t str_size) noexcept;
+    /**
+     * @param str string or string_view which you want to decode
+     * @return checks what contains only alphabet chars and ends with no more than two '=' chars
+     */
+    bool isValid(std::string_view str) noexcept;
+
+    /**
+     * @param data vector or span of data which you want to encode
+     * @return exact size after encoding
+     * @throw basen::Exception(OVERFLOW) if there is an overflow
+     */
+    size_t sizeEncoded(std::span<const uint8_t> data);
+    /**
+     * @param str string or string_view which you want to decode
+     * @return exact size after decoding
+     */
+    size_t sizeDecoded(std::string_view str) noexcept;
+
+    /**
+     * @param data [in] pointer to data which you want encode
+     * @param str [out] pointer to string for encoded data output
+     * @throw basen::Exception(OVERFLOW) from base64::sizeEncoded
+     * @throw basen::Exception(LENGTH) if not enough allocated length
+     */
+    void encode(const uint8_t *data, size_t data_size, char *str, size_t str_size);
+    /**
+     * @param data vector or span of data which you want to encode
+     * @return encoded string
+     * @throw basen::Exception(OVERFLOW) from base64::sizeEncoded
+     * @throw basen::Exception(LENGTH) if not enough allocated length
+     */
+    std::string encode(std::span<const uint8_t> data);
+
+    /**
+     * @param str [in] pointer to string which you want decode
+     * @param data [out] pointer to data for encoded string output
+     * @throw basen::Exception(LENGTH) if not enough allocated length
+     * @throw basen::Exception(OUT_OF_ALPH) if out of digits map
+     * @throw basen::Exception(PADDING) if incorrect padding
+     */
+    void decode(const char *str, size_t str_size, uint8_t *data, size_t data_size);
+    /**
+     * @param str string or string_view which you want to decode
+     * @return decoded data
+     * @throw basen::Exception(LENGTH) if not enough allocated length
+     * @throw basen::Exception(OUT_OF_ALPH) if out of digits map
+     * @throw basen::Exception(PADDING) if incorrect padding
+     */
+    std::vector<uint8_t> decode(std::string_view str);
+}

include/basen/baseN.hpp

@@ -0,0 +1,87 @@
+#pragma once
+
+#include <cstdint>
+#include <span>
+#include <string>
+#include <vector>
+
+namespace baseN
+{
+    /**
+     * @param digits [in] alphabet of encoding
+     * @param map [out] uint8_t[256] array, where at an index equal to the value of the symbol is the index of this symbol in the digits array. 255 if there is no symbol
+     * @return map of alphabet of encoding
+     * @throw basen::Exception(ALPH_COLLISION) if alphabet contain same chars
+     */
+    void digitsMap(const char *digits, uint8_t digits_size, uint8_t *map);
+    /**
+     * @param map map of alphabet of encoding, which is returned by baseN::digitsMap
+     * @return checks what contains only alphabet chars
+     */
+    bool isValid(const char *str, size_t str_size, const uint8_t *map) noexcept;
+    /**
+     * @param str string or string_view which you want to decode
+     * @param map map of alphabet of encoding, which is returned by baseN::digitsMap
+     * @return checks what contains only alphabet chars
+     */
+    bool isValid(std::string_view str, const uint8_t *map) noexcept;
+
+    /**
+     * @param data vector or span of data which you want to encode
+     * @param base radix of encoding from [2 to 254]
+     * @return estimated size after encoding (obviously larger)
+     * @throw basen::Exception(BASE) if base < 2 || base > 254
+     */
+    size_t sizeEncoded(std::span<const uint8_t> data, uint8_t base);
+    /**
+     * @param str string or string_view which you want to decode
+     * @param base radix of encoding from [2 to 254]
+     * @param digits alphabet of encoding
+     * @return estimated size after decoding (obviously larger)
+     * @throw basen::Exception(BASE) if base < 2 || base > 254
+     * @throw basen::Exception(OVERFLOW) if if there is an overflow
+     */
+    size_t sizeDecoded(std::string_view str, uint8_t base, const char *digits);
+
+    /**
+     * @param data [in] pointer to data which you want encode
+     * @param str [out] pointer to string for encoded data output
+     * @param base radix of encoding from [2 to 254]
+     * @param digits alphabet of encoding
+     * @return number of leading chars, which should be trimmed
+     * @throw basen::Exception(BASE) if base < 2 || base > 254
+     * @warning contain leading zeros, returns count of them
+     */
+    size_t encode(const uint8_t *data, size_t data_size, char *str, size_t str_size, uint8_t base, const char *digits);
+    /**
+     * @param data vector or span of data which you want to encode
+     * @param base radix of encoding from [2 to 254]
+     * @param digits alphabet of encoding
+     * @return encoded string
+     * @throw basen::Exception(BASE) if base < 2 || base > 254
+     */
+    std::string encode(std::span<const uint8_t> data, uint8_t base, const char *digits);
+
+    /**
+     * @param str [in] pointer to string which you want decode
+     * @param data [out] pointer to data for encoded string output
+     * @param base radix of encoding from [2 to 254]
+     * @param digits alphabet of encoding
+     * @param map map of alphabet of encoding, which is returned by baseN::digitsMap
+     * @return number of leading chars, which should be trimmed
+     * @throw basen::Exception(BASE) if base < 2 || base > 254
+     * @throw basen::Exception(OUT_OF_ALPH) if out of alphabet
+     * @warning contain leading zeros, returns count of them
+     */
+    size_t decode(const char *str, size_t str_size, uint8_t *data, size_t data_size, uint8_t base, const char *digits, const uint8_t *map);
+    /**
+     * @param str string or string_view which you want to decode
+     * @param base radix of encoding from [2 to 254]
+     * @param digits alphabet of encoding
+     * @param map map of alphabet of encoding, which is returned by baseN::digitsMap
+     * @return decoded data
+     * @throw basen::Exception(BASE) if base < 2 || base > 254
+     * @throw basen::Exception(OUT_OF_ALPH) if out of alphabet
+     */
+    std::vector<uint8_t> decode(std::string_view str, uint8_t base, const char *digits, const uint8_t *map);
+}

include/basen/hash/sha256.hpp

@@ -4,9 +4,8 @@
 #include <span>
 #include <vector>
 
-#define SHA256_DIGEST_LENGTH 32
-
-namespace hash {
-	void sha256(const uint8_t *data, uint64_t data_size, uint8_t *hash) noexcept;
+namespace hash
+{
+	void sha256(const uint8_t *data, size_t data_size, uint8_t *hash) noexcept;
 	std::vector<uint8_t> sha256(std::span<const uint8_t> data) noexcept;
 }

include/basen/hex.hpp

@@ -0,0 +1,68 @@
+#pragma once
+
+#include <cstdint>
+#include <span>
+#include <string>
+#include <vector>
+
+namespace hex
+{
+    /**
+     * @brief lower case chars
+     */
+    extern const char digits[17];
+    extern const uint8_t map[256];
+
+    /**
+     * @return checks what contains only alphabet chars
+     */
+    bool isValid(const char *str, size_t str_size) noexcept;
+    /**
+     * @param str string or string_view which you want to decode
+     * @return checks what contains only alphabet chars
+     */
+    bool isValid(std::string_view str) noexcept;
+
+    /**
+     * @param data vector or span of data which you want to encode
+     * @return exact size after encoding
+     * @throw basen::Exception(OVERFLOW) if there is an overflow
+     */
+    size_t sizeEncoded(std::span<const uint8_t> data);
+    /**
+     * @param str string or string_view which you want to decode
+     * @return exact size after decoding
+     */
+    size_t sizeDecoded(std::string_view str) noexcept;
+
+    /**
+     * @param data [in] pointer to data which you want encode
+     * @param str [out] pointer to string for encoded data output
+     * @throw basen::Exception(OVERFLOW) from hex::sizeEncoded
+     * @throw basen::Exception(LENGTH) if not enough allocated length
+     */
+    void encode(const uint8_t *data, size_t data_size, char *str, size_t str_size);
+    /**
+     * @param data vector or span of data which you want to encode
+     * @return encoded string
+     * @throw basen::Exception(OVERFLOW) from hex::sizeEncoded
+     * @throw basen::Exception(LENGTH) if not enough allocated length
+     */
+    std::string encode(std::span<const uint8_t> data);
+
+    /**
+     * @param str [in] pointer to string which you want decode
+     * @param data [out] pointer to data for encoded string output
+     * @throw basen::Exception(LENGTH) if not enough allocated length
+     * @throw basen::Exception(OUT_OF_ALPH) if out of digits map
+     * @throw basen::Exception(PADDING) if str_size %2 != 0 (isn't hex)
+     */
+    void decode(const char *str, size_t str_size, uint8_t *data, size_t data_size);
+    /**
+     * @param str string or string_view which you want to decode
+     * @throw basen::Exception(LENGTH) if not enough allocated length
+     * @throw basen::Exception(OUT_OF_ALPH) if out of digits map
+     * @throw basen::Exception(PADDING) if str_size %2 != 0 (isn't hex)
+     */
+    std::vector<uint8_t> decode(std::string_view str);
+}

include/meson.build

@@ -0,0 +1 @@
+install_subdir('.', install_dir: 'include', exclude_files: ['meson.build'])

meson.build

@@ -0,0 +1,34 @@
+project(
+    'basen',
+    'cpp',
+    version: '1.1.1',
+    default_options: {
+        'cpp_std': 'c++20',
+        'cpp_args': '-Wall -Wextra -Werror -Wno-unused-result',
+    },
+    license: 'LGPL-3.0-only',
+    license_files: 'LICENSE',
+    meson_version: '>=1.10.0',
+)
+
+configure_file(
+    input: 'config.hpp.in',
+    output: 'config.hpp',
+    configuration: {'ver_str': meson.project_version()},
+)
+
+include = include_directories('.', 'include')
+
+subdir('include')
+subdir('src')
+
+basen_dep = declare_dependency(
+    link_with: libbasen,
+    include_directories: include,
+)
+
+if get_option('buildtype') == 'debug'
+  subdir('test')
+endif
+
+subdir('tools')

src/Exception.cpp

@@ -0,0 +1,29 @@
+#include <sstream>
+
+#include <basen/Exception.hpp>
+
+namespace basen
+{
+    const std::unordered_map<Exception::Code, std::string> Exception::messages = {
+        {Code::BASE, "incorrect base"},
+        {Code::PADDING, "incorrect padding"},
+        {Code::CHECKSUM, "incorrect checksum"},
+        {Code::OVERFLOW, "overflow"},
+        {Code::LENGTH, "not enough  allocated length"},
+        {Code::OUT_OF_ALPH, "out of alphabet"},
+        {Code::ALPH_COLLISION, "alphabet contains same chars"},
+    };
+    Exception::Exception(Code code, const std::source_location &location)
+    {
+        _code = code;
+        std::ostringstream oss;
+        oss << "\033[34m"
+            << location.function_name()
+            << ':'
+            << location.line()
+            << ": \033[31mbasen::Exception:\n\t\033[0m"
+            << message()
+            << "\n";
+        _what = oss.str();
+    }
+}

src/base58.cpp

@@ -0,0 +1,85 @@
+#include <stdexcept>
+
+#include <basen/base58.hpp>
+#include <basen/baseN.hpp>
+#include <basen/Exception.hpp>
+#include <basen/hash/sha256.hpp>
+
+namespace base58
+{
+    const char digits[] =
+        "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
+    const uint8_t map[] = {
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 255, 255, 255, 255, 255, 255,
+        255, 9, 10, 11, 12, 13, 14, 15, 16, 255, 17, 18, 19, 20, 21, 255,
+        22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 255, 255, 255, 255, 255,
+        255, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 255, 44, 45, 46,
+        47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        //
+    };
+    bool isValid(const char *str, size_t str_size) noexcept
+    {
+        return baseN::isValid(str, str_size, map);
+    }
+    bool isValid(std::string_view str) noexcept
+    {
+        return baseN::isValid(str, map);
+    }
+    size_t sizeEncoded(std::span<const uint8_t> data)
+    {
+        return baseN::sizeEncoded(data, 58);
+    }
+    size_t sizeDecoded(std::string_view str) noexcept
+    {
+        return baseN::sizeDecoded(str, 58, digits);
+    }
+    size_t encode(const uint8_t *data, size_t data_size, char *str, size_t str_size)
+    {
+        return baseN::encode(data, data_size, str, str_size, 58, digits);
+    }
+    std::string encode(std::span<const uint8_t> data)
+    {
+        return baseN::encode(data, 58, digits);
+    }
+    size_t decode(const char *str, size_t str_size, uint8_t *data, size_t data_size)
+    {
+        return baseN::decode(str, str_size, data, data_size, 58, digits, map);
+    }
+    std::vector<uint8_t> decode(std::string_view str)
+    {
+        return baseN::decode(str, 58, digits, map);
+    }
+    std::string encodeCheck(std::span<const uint8_t> data)
+    {
+        std::vector<uint8_t> buff(data.begin(), data.end()), dhash;
+        dhash = hash::sha256(hash::sha256(data));
+        buff.insert(buff.end(), &dhash[0], &dhash[4]);
+        return base58::encode(buff);
+    }
+    std::vector<uint8_t> decodeCheck(std::string_view str)
+    {
+        std::vector<uint8_t> buff(base58::decode(str));
+        if (buff.size() < 4)
+        {
+            throw basen::Exception(basen::Exception::Code::PADDING);
+        }
+        std::span<uint8_t> data(buff.begin(), buff.end() - 4);
+        std::span<uint8_t> dhash(buff.end() - 4, buff.end());
+        if (!std::equal(dhash.begin(), dhash.end(), hash::sha256(hash::sha256(data)).begin()))
+        {
+            throw basen::Exception(basen::Exception::Code::CHECKSUM);
+        }
+        return std::vector<uint8_t>(data.begin(), data.end());
+    }
+}

src/base64.cpp

@@ -2,35 +2,34 @@
 #include <limits>
 #include <stdexcept>
 
-#include <base/base64.hpp>
-#include <base/baseN.hpp>
-
-static const char b64digits[] =
-    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
-static const int8_t b64map[] = {
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
-    52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
-    -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
-    15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
-    -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
-    41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    //
-};
+#include <basen/base64.hpp>
+#include <basen/baseN.hpp>
+#include <basen/Exception.hpp>
 
 namespace base64
 {
-    bool isValid(const char *str, uint64_t str_size) noexcept
+    const char digits[] =
+        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+    const uint8_t map[] = {
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 62, 255, 255, 255, 63,
+        52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 255, 255, 255, 255, 255, 255,
+        255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
+        15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 255, 255, 255, 255, 255,
+        255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+        41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        //
+    };
+    bool isValid(const char *str, size_t str_size) noexcept
     {
         return base64::isValid(std::string_view(str, str_size));
     }
@@ -43,105 +42,102 @@ namespace base64
         {
             return false;
         }
-        return baseN::isValid(sv, b64map);
+        return baseN::isValid(sv, map);
     }
-    uint64_t sizeEncoded(std::span<const uint8_t> data)
+    size_t sizeEncoded(std::span<const uint8_t> data)
     {
-        uint64_t str_size = data.size() / 3;
-        if (str_size > std::numeric_limits<uint64_t>::max() / 4)
+        size_t str_size = data.size() / 3;
+        if (str_size > std::numeric_limits<size_t>::max() / 4)
         {
-            throw std::overflow_error("base64::sizeEncoded: overflow");
+            throw basen::Exception(basen::Exception::Code::OVERFLOW);
         }
         str_size = str_size * 4 + (data.size() % 3 ? 4 : 0);
         return str_size;
     }
-    uint64_t sizeDecoded(std::string_view str) noexcept
+    size_t sizeDecoded(std::string_view str) noexcept
     {
         auto size = std::distance(str.begin(), std::find_if(str.rbegin(), str.rend(), [](char ch)
                                                             { return ch != '='; })
                                                    .base());
         return size / 4 * 3 + (size % 4 ? size % 4 - 1 : 0);
     }
-    void encode(const uint8_t *data, uint64_t data_size, char *str, uint64_t str_size)
+    void encode(const uint8_t *data, size_t data_size, char *str, size_t str_size)
     {
         if (str_size < base64::sizeEncoded(std::span<const uint8_t>(data, data_size)))
         {
-            throw std::logic_error("base64::encode: not enough allocated length");
+            throw basen::Exception(basen::Exception::Code::LENGTH);
         }
-        for (uint64_t i = 0; i < data_size / 3; i++)
+        for (size_t i = 0; i < data_size / 3; i++)
         {
-            str[i * 4] = b64digits[data[i * 3] >> 2];
-            str[i * 4 + 1] = b64digits[(data[i * 3] << 4 | data[i * 3 + 1] >> 4) & 0x3F];
-            str[i * 4 + 2] = b64digits[(data[i * 3 + 1] << 2 | data[i * 3 + 2] >> 6) & 0x3F];
-            str[i * 4 + 3] = b64digits[data[i * 3 + 2] & 0x3F];
+            str[i * 4] = digits[data[i * 3] >> 2];
+            str[i * 4 + 1] = digits[(data[i * 3] << 4 | data[i * 3 + 1] >> 4) & 0x3F];
+            str[i * 4 + 2] = digits[(data[i * 3 + 1] << 2 | data[i * 3 + 2] >> 6) & 0x3F];
+            str[i * 4 + 3] = digits[data[i * 3 + 2] & 0x3F];
         }
-        uint64_t last_idx = data_size / 3 * 4;
-        if (last_idx + 3 < str_size)
+        size_t last_idx = data_size / 3 * 4;
+        switch (data_size % 3)
         {
-            switch (data_size % 3)
-            {
-            case 1:
-                str[last_idx] = b64digits[data[data_size - 1] >> 2];
-                str[last_idx + 1] = b64digits[data[data_size - 1] << 4 & 0x30];
-                str[last_idx + 2] = '=';
-                str[last_idx + 3] = '=';
-                break;
-            case 2:
-                str[last_idx] = b64digits[data[data_size - 2] >> 2];
-                str[last_idx + 1] = b64digits[(data[data_size - 2] << 4 | data[data_size - 1] >> 4) & 0x3F];
-                str[last_idx + 2] = b64digits[data[data_size - 1] & 0x0F];
-                str[last_idx + 3] = '=';
-                break;
-            default:
-                break;
-            }
+        case 1:
+            str[last_idx] = digits[data[data_size - 1] >> 2];
+            str[last_idx + 1] = digits[data[data_size - 1] << 4 & 0x30];
+            str[last_idx + 2] = '=';
+            str[last_idx + 3] = '=';
+            break;
+        case 2:
+            str[last_idx] = digits[data[data_size - 2] >> 2];
+            str[last_idx + 1] = digits[(data[data_size - 2] << 4 | data[data_size - 1] >> 4) & 0x3F];
+            str[last_idx + 2] = digits[data[data_size - 1] << 2 & 0x3F];
+            str[last_idx + 3] = '=';
+            break;
+        default:
+            break;
         }
     }
-    std::string encode(std::span<const uint8_t> data) noexcept
+    std::string encode(std::span<const uint8_t> data)
     {
         std::string str(base64::sizeEncoded(data), ' ');
         base64::encode(data.data(), data.size(), str.data(), str.size());
         return str;
     }
-    void decode(const char *str, uint64_t str_size, uint8_t *data, uint64_t data_size)
+    void decode(const char *str, size_t str_size, uint8_t *data, size_t data_size)
     {
         std::string_view sv(str, str_size);
         if (data_size < base64::sizeDecoded(sv))
         {
-            throw std::logic_error("base64::decode: not enough allocated length");
+            throw basen::Exception(basen::Exception::Code::LENGTH);
         }
         if (!base64::isValid(sv))
         {
-            throw std::logic_error("base64::decode: out of digits map");
+            throw basen::Exception(basen::Exception::Code::OUT_OF_ALPH);
         }
         auto size = std::distance(sv.begin(), std::find_if(sv.rbegin(), sv.rend(), [](char ch)
                                                            { return ch != '='; })
                                                   .base());
         if (sv.size() % 4 != 0 || sv.size() - size > 2)
         {
-            throw std::logic_error("base64::decode: incorrect padding");
+            throw basen::Exception(basen::Exception::Code::PADDING);
         }
         for (auto i = 0; i < size / 4; i++)
         {
-            data[i * 3] = b64map[(int8_t)str[i * 4]] << 2 | b64map[(int8_t)str[i * 4 + 1]] >> 4;
-            data[i * 3 + 1] = b64map[(int8_t)str[i * 4 + 1]] << 4 | b64map[(int8_t)str[i * 4 + 2]] >> 2;
-            data[i * 3 + 2] = b64map[(int8_t)str[i * 4 + 2]] << 6 | b64map[(int8_t)str[i * 4 + 3]];
+            data[i * 3] = map[(uint8_t)str[i * 4]] << 2 | map[(uint8_t)str[i * 4 + 1]] >> 4;
+            data[i * 3 + 1] = map[(uint8_t)str[i * 4 + 1]] << 4 | map[(uint8_t)str[i * 4 + 2]] >> 2;
+            data[i * 3 + 2] = map[(uint8_t)str[i * 4 + 2]] << 6 | map[(uint8_t)str[i * 4 + 3]];
         }
-        uint64_t last_idx = size / 4 * 3;
+        size_t last_idx = size / 4 * 3;
         switch (size % 4)
         {
         case 2:
-            data[last_idx] = b64map[(int8_t)str[size - 2]] << 2 | b64map[(int8_t)str[size - 1]] >> 4;
+            data[last_idx] = map[(uint8_t)str[size - 2]] << 2 | map[(uint8_t)str[size - 1]] >> 4;
             break;
         case 3:
-            data[last_idx] = b64map[(int8_t)str[size - 3]] << 2 | b64map[(int8_t)str[size - 2]] >> 4;
-            data[last_idx + 1] = b64map[(int8_t)str[size - 2]] << 4 | b64map[(int8_t)str[size - 1]] >> 2;
+            data[last_idx] = map[(uint8_t)str[size - 3]] << 2 | map[(uint8_t)str[size - 2]] >> 4;
+            data[last_idx + 1] = map[(uint8_t)str[size - 2]] << 4 | map[(uint8_t)str[size - 1]] >> 2;
             break;
         default:
             break;
         }
     }
-    std::vector<uint8_t> decode(std::string_view str) noexcept
+    std::vector<uint8_t> decode(std::string_view str)
     {
         std::vector<uint8_t> data(base64::sizeDecoded(str));
         base64::decode(str.data(), str.size(), data.data(), data.size());

src/baseN.cpp

@@ -1,153 +1,167 @@
 #include <algorithm>
 #include <cmath>
 #include <limits>
-#include <stdexcept>
 
-#include <base/baseN.hpp>
+#include <basen/baseN.hpp>
+#include <basen/Exception.hpp>
 
-static constexpr auto log256 = std::log(256);
+static constexpr auto log256 = 5.545177444479562;
 
 namespace baseN
 {
-    bool isValid(const char *str, uint64_t str_size, const int8_t *map) noexcept
+    void digitsMap(const char *digits, uint8_t digits_size, uint8_t *map)
     {
-        std::string_view sv(str, str_size);
-        return std::all_of(sv.begin(), sv.end(), [map](char ch)
-                           { return map[(int8_t)ch] != -1; });
+        std::fill(map, map + 256, 255);
+        for (uint8_t i = 0; i < digits_size; i++)
+        {
+            if (map[(uint8_t)digits[i]] != 255)
+            {
+                throw basen::Exception(basen::Exception::Code::ALPH_COLLISION);
+            }
+            map[(uint8_t)digits[i]] = i;
+        }
     }
-    bool isValid(std::string_view str, const int8_t *map) noexcept
+    bool isValid(const char *str, size_t str_size, const uint8_t *map) noexcept
+    {
+        return std::all_of(str, str + str_size, [map](char ch)
+                           { return map[(uint8_t)ch] != 255; });
+    }
+    bool isValid(std::string_view str, const uint8_t *map) noexcept
     {
         return baseN::isValid(str.data(), str.size(), map);
     }
-    uint64_t sizeEncoded(std::span<const uint8_t> data, uint8_t base)
+    size_t sizeEncoded(std::span<const uint8_t> data, uint8_t base)
     {
-        if (data.size() > std::numeric_limits<uint64_t>::max() / log256)
+        if (base < 2 || base > 254)
         {
-            throw std::overflow_error("baseN::sizeEncoded: overflow");
+            throw basen::Exception(basen::Exception::Code::BASE);
         }
-        return data.size() * log256 / std::log(base) + 1; 
+        std::span<const uint8_t> dv(std::find_if(data.begin(), data.end(), [](uint8_t item)
+                                                 { return item != 0; }),
+                                    data.end());
+        if (dv.size() > (double)std::numeric_limits<size_t>::max() / log256)
+        {
+            throw basen::Exception(basen::Exception::Code::OVERFLOW);
+        }
+        return dv.size() * log256 / std::log(base) + 1 + (data.size() - dv.size());
     }
-    uint64_t sizeDecoded(std::string_view str, uint8_t base) noexcept
+    size_t sizeDecoded(std::string_view str, uint8_t base, const char *digits)
     {
-        return str.size() * std::log(base) / log256 + 1;
+        if (base < 2 || base > 254)
+        {
+            throw basen::Exception(basen::Exception::Code::BASE);
+        }
+        std::string_view sv(std::find_if(str.begin(), str.end(), [digits](uint8_t ch)
+                                         { return ch != digits[0]; }),
+                            str.end());
+        return sv.size() * std::log(base) / log256 + 1 + (str.size() - sv.size());
     }
-    // void encode(const uint8_t *data, uint64_t data_size, char *str, uint8_t base, const char *digits, uint64_t enc_size) noexcept
-    // {
-    //     if (data_size == 0)
-    //     {
-    //         return;
-    //     }
-    //     char res_str[enc_size];
-    //     uint8_t div_buf[data_size];
-    //     std::copy(data, data + data_size, div_buf);
-    //     int64_t
-    //         zero_count = 0,
-    //         idx_div = 0,
-    //         idx_quo = 0,
-    //         idx_quo_last = data_size,
-    //         idx_str = enc_size - 1;
-    //     uint16_t div = data[idx_div++];
+    size_t encode(const uint8_t *data, size_t data_size, char *str, size_t str_size, uint8_t base, const char *digits)
+    {
+        if (base < 2 || base > 254)
+        {
+            throw basen::Exception(basen::Exception::Code::BASE);
+        }
+        std::vector<uint8_t> dv(std::find_if(data, data + data_size, [](uint8_t item)
+                                             { return item != 0; }),
+                                data + data_size);
+        std::span<char> sv(str, str_size);
+        auto sv_it = sv.rbegin();
+        auto dv_it = dv.begin();
+        auto quo_it = dv.begin();
+        auto quo_it_last = dv.end();
 
-    //     while (zero_count < (int64_t)data_size && data[zero_count] == 0)
-    //     {
-    //         zero_count++;
-    //     }
-    //     while (idx_quo_last > 1 || div_buf[0] > base)
-    //     {
-    //         if (div < base)
-    //         {
-    //             div <<= 8;
-    //             div += div_buf[idx_div++];
-    //         }
-    //         div_buf[idx_quo++] = div / base;
-    //         div %= base;
-    //         while (idx_div < idx_quo_last)
-    //         {
-    //             div <<= 8;
-    //             div += div_buf[idx_div++];
-    //             div_buf[idx_quo++] = div / base;
-    //             div %= base;
-    //         }
-    //         idx_quo_last = idx_quo;
-    //         idx_quo = 0;
-    //         idx_div = 0;
-    //         res_str[idx_str--] = digits[div];
-    //         div = div_buf[idx_div++];
-    //     }
-    //     res_str[idx_str--] = digits[div];
-    //     while (zero_count > 0 && idx_str >= 0)
-    //     {
-    //         res_str[idx_str--] = digits[0];
-    //         zero_count--;
-    //     }
-    //     while (idx_str >= 0)
-    //     {
-    //         res_str[idx_str--] = ' ';
-    //     }
-    //     std::copy(res_str, res_str + enc_size, str);
-    // }
-    // std::string encode(std::span<const uint8_t> data, uint8_t base, const char *digits, uint64_t enc_size) noexcept
-    // {
-    //     std::string str(enc_size, ' ');
-    //     baseN::encode(data.data(), data.size(), str.data(), base, digits, enc_size);
-    //     str.erase(str.begin(), std::find_if(
-    //                                str.begin(), str.end(), [](char ch)
-    //                                { return ch != ' '; }));
-    //     return str;
-    // }
-    // std::string encode(std::span<const uint8_t> data, uint8_t base, const char *digits) noexcept
-    // {
-    //     return baseN::encode(data, base, digits, data.size() * std::log(256) / std::log(base) + 1);
-    // }
-    // void decode(const char *str, uint8_t *data, uint64_t data_size, uint8_t base, const char *digits, const int8_t *map, uint64_t dec_size)
-    // {
-    //     if (str[0] == '\0')
-    //     {
-    //         return;
-    //     }
-    //     if (!baseN::isValid(str, map))
-    //     {
-    //         throw std::logic_error("baseN::decode: out of digits map");
-    //     }
-    //     uint8_t res_data[dec_size];
-    //     uint64_t idx_str = 0;
-    //     int64_t
-    //         zero_count = 0,
-    //         idx_quo = dec_size - 1,
-    //         idx_quo_last = dec_size - 2;
-    //     uint16_t div;
+        if (dv.size() != 0)
+        {
+            uint16_t div = *dv_it++;
+            while ((dv[0] > base || quo_it_last > dv.begin() + 1) && sv_it < sv.rend() - 1)
+            {
+                if (div < base)
+                {
+                    div <<= 8;
+                    div += *dv_it++;
+                }
+                *quo_it++ = div / base;
+                div %= base;
+                while (dv_it < quo_it_last)
+                {
+                    div <<= 8;
+                    div += *dv_it++;
+                    *quo_it++ = div / base;
+                    div %= base;
+                }
+                quo_it_last = quo_it;
+                dv_it = dv.begin();
+                quo_it = dv.begin();
+                *sv_it++ = digits[div];
+                div = *dv_it++;
+            }
+            *sv_it++ = digits[div];
+        }
+        for (size_t i = 0; i < data_size - dv.size() && sv_it < sv.rend(); i++)
+        {
+            *sv_it++ = digits[0];
+        }
+        return std::distance(sv_it, sv.rend());
+    }
+    std::string encode(std::span<const uint8_t> data, uint8_t base, const char *digits)
+    {
+        std::string str(baseN::sizeEncoded(data, base), ' ');
+        size_t offset = baseN::encode(data.data(), data.size(), str.data(), str.size(), base, digits);
+        str.erase(str.begin(), str.begin() + offset);
+        return str;
+    }
+    size_t decode(const char *str, size_t str_size, uint8_t *data, size_t data_size, uint8_t base, const char *digits, const uint8_t *map)
+    {
+        if (base < 2 || base > 254)
+        {
+            throw basen::Exception(basen::Exception::Code::BASE);
+        }
+        std::string_view sv(std::find_if(str, str + str_size, [digits](char ch)
+                                         { return ch != digits[0]; }),
+                            str + str_size);
+        if (!baseN::isValid(sv, map))
+        {
+            throw basen::Exception(basen::Exception::Code::OUT_OF_ALPH);
+        }
+        std::span<uint8_t> dv(data, data_size);
+        auto sv_it = sv.begin();
+        auto quo_it = dv.rbegin();
+        auto quo_it_last = dv.rbegin();
+        uint16_t div;
 
-    //     while (str[zero_count] != '\0' && str[zero_count] == digits[0])
-    //     {
-    //         zero_count++;
-    //     }
-    //     res_data[idx_quo] = map[(int8_t)str[idx_str++]];
-    //     while (str[idx_str] != '\0')
-    //     {
-    //         div = map[(int8_t)str[idx_str++]];
-    //         while (idx_quo > idx_quo_last && idx_quo > 0)
-    //         {
-    //             div += res_data[idx_quo] * base;
-    //             res_data[idx_quo--] = div;
-    //             div >>= 8;
-    //         }
-    //         res_data[idx_quo--] = div;
-    //         idx_quo_last = idx_quo;
-    //         idx_quo = dec_size - 1;
-    //     }
-    //     std::copy(res_data, res_data + std::min(dec_size, data_size), data);
-    // }
-    // std::vector<uint8_t> decode(std::string_view str, uint8_t base, const char *digits, const int8_t *map, uint64_t dec_size)
-    // {
-    //     std::vector<uint8_t> data(dec_size);
-    //     baseN::decode(str.data(), data.data(), data.size(), base, digits, map, dec_size);
-    //     data.erase(data.begin(), std::find_if(
-    //                                  data.begin(), data.end(), [](uint8_t byte)
-    //                                  { return byte != 0; }));
-    //     return data;
-    // }
-    // std::vector<uint8_t> decode(std::string_view str, uint8_t base, const char *digits, const int8_t *map)
-    // {
-    //     return baseN::decode(str, base, digits, map, str.size() * std::log(base) / std::log(256) + 1);
-    // }
-}
+        if (sv.size() != 0)
+        {
+            quo_it_last++;
+            *quo_it = map[(uint8_t)*sv_it++];
+            while (sv_it < sv.end())
+            {
+                div = map[(uint8_t)*sv_it++];
+                while (quo_it < quo_it_last && quo_it < dv.rend())
+                {
+                    div += *quo_it * base;
+                    *quo_it++ = div;
+                    div >>= 8;
+                }
+                if (div != 0 && quo_it < dv.rend())
+                {
+                    *quo_it++ = div;
+                }
+                quo_it_last = quo_it;
+                quo_it = dv.rbegin();
+            }
+        }
+        for (size_t i = 0; i < str_size - sv.size() && quo_it_last < dv.rend(); i++)
+        {
+            *quo_it_last++ = 0;
+        }
+        return std::distance(quo_it_last, dv.rend());
+    }
+    std::vector<uint8_t> decode(std::string_view str, uint8_t base, const char *digits, const uint8_t *map)
+    {
+        std::vector<uint8_t> data(baseN::sizeDecoded(str, base, digits));
+        size_t offset = baseN::decode(str.data(), str.size(), data.data(), data.size(), base, digits, map);
+        data.erase(data.begin(), data.begin() + offset);
+        return data;
+    }
+}

src/hash/sha256.cpp

@@ -15,7 +15,7 @@
 #include <memory.h>
 #include <stdlib.h>
 
-#include <base/hash/sha256.hpp>
+#include <basen/hash/sha256.hpp>
 
 #define ROTLEFT(a,b) (((a) << (b)) | ((a) >> (32-(b))))
 #define ROTRIGHT(a,b) (((a) >> (b)) | ((a) << (32-(b))))
@@ -165,7 +165,7 @@ static void sha256_final(SHA256_CTX *ctx, uint8_t *hash)
 
 namespace hash
 {
-	void sha256(const uint8_t *data, uint64_t data_size, uint8_t *hash) noexcept
+	void sha256(const uint8_t *data, size_t data_size, uint8_t *hash) noexcept
 	{
 		SHA256_CTX ctx;
 		sha256_init(&ctx);
@@ -174,7 +174,7 @@ namespace hash
 	}
 	std::vector<uint8_t> sha256(std::span<const uint8_t> data) noexcept
 	{
-		std::vector<uint8_t> hash(SHA256_DIGEST_LENGTH);
+		std::vector<uint8_t> hash(32);
 		sha256(data.data(), data.size(), hash.data());
 		return hash;
 	}

src/hex.cpp

@@ -1,94 +1,92 @@
 #include <limits>
-#include <stdexcept>
 
-#include <base/baseN.hpp>
-#include <base/hex.hpp>
-
-static const char hexdigits[] = "0123456789abcdef";
-
-static const int8_t hexmap[] = {
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1,
-    -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    //
-};
+#include <basen/baseN.hpp>
+#include <basen/Exception.hpp>
+#include <basen/hex.hpp>
 
 namespace hex
 {
-    bool isValid(const char *str, uint64_t str_size) noexcept
+    const char digits[] = "0123456789abcdef";
+    const uint8_t map[] = {
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 255, 255, 255, 255, 255, 255,
+        255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+        //
+    };
+    bool isValid(const char *str, size_t str_size) noexcept
     {
-        return baseN::isValid(str, str_size, hexmap);
+        return baseN::isValid(str, str_size, map);
     }
     bool isValid(std::string_view str) noexcept
     {
-        return baseN::isValid(str, hexmap);
+        return baseN::isValid(str, map);
     }
-    uint64_t sizeEncoded(std::span<const uint8_t> data)
+    size_t sizeEncoded(std::span<const uint8_t> data)
     {
-        if (data.size() > std::numeric_limits<uint64_t>::max() / 2)
+        if (data.size() > std::numeric_limits<size_t>::max() / 2)
         {
-            throw std::overflow_error("hex::sizeEncoded: overflow");
+            throw basen::Exception(basen::Exception::Code::OVERFLOW);
         }
         return data.size() * 2;
     }
-    uint64_t sizeDecoded(std::string_view str) noexcept
+    size_t sizeDecoded(std::string_view str) noexcept
     {
         return str.size() / 2;
     }
-    void encode(const uint8_t *data, uint64_t data_size, char *str, uint64_t str_size)
+    void encode(const uint8_t *data, size_t data_size, char *str, size_t str_size)
     {
         if (str_size < hex::sizeEncoded(std::span<const uint8_t>(data, data_size)))
         {
-            throw std::logic_error("hex::encode: not enough allocated length");
+            throw basen::Exception(basen::Exception::Code::LENGTH);
         }
-        for (uint64_t i = 0; i < data_size; i++)
+        for (size_t i = 0; i < data_size; i++)
         {
-            str[i * 2] = hexdigits[data[i] >> 4];
-            str[i * 2 + 1] = hexdigits[data[i] & 0x0F];
+            str[i * 2] = digits[data[i] >> 4];
+            str[i * 2 + 1] = digits[data[i] & 0x0F];
         }
     }
-    std::string encode(std::span<const uint8_t> data) noexcept
+    std::string encode(std::span<const uint8_t> data)
     {
         std::string str(hex::sizeEncoded(data), ' ');
         hex::encode(data.data(), data.size(), str.data(), str.size());
         return str;
     }
-    void decode(const char *str, uint64_t str_size, uint8_t *data, uint64_t data_size)
+    void decode(const char *str, size_t str_size, uint8_t *data, size_t data_size)
     {
         if (str_size % 2 != 0)
         {
-            throw std::logic_error("hex::decode: isn't hex");
+            throw basen::Exception(basen::Exception::Code::PADDING);
         }
         if (data_size < hex::sizeDecoded(std::string_view(str, str_size)))
         {
-            throw std::logic_error("hex::decode: not enough allocated length");
+            throw basen::Exception(basen::Exception::Code::LENGTH);
         }
         if (!hex::isValid(str, str_size))
         {
-            throw std::logic_error("hex::decode: out of digits map");
+            throw basen::Exception(basen::Exception::Code::OUT_OF_ALPH);
         }
-        for (uint64_t i = 0; i * 2 < str_size; i++)
+        for (size_t i = 0; i * 2 < str_size; i++)
         {
-            data[i] = hexmap[(int8_t)str[i * 2]] << 4 | hexmap[(int8_t)str[i * 2 + 1]];
+            data[i] = map[(uint8_t)str[i * 2]] << 4 | map[(uint8_t)str[i * 2 + 1]];
         }
     }
-    std::vector<uint8_t> decode(std::string_view str) noexcept
+    std::vector<uint8_t> decode(std::string_view str)
     {
         std::vector<uint8_t> data(hex::sizeDecoded(str));
         hex::decode(str.data(), str.size(), data.data(), data.size());
         return data;
     }
-}
+}

src/meson.build

@@ -0,0 +1,11 @@
+libbasen = library(
+    'basen',
+    'hex.cpp',
+    'baseN.cpp',
+    'base58.cpp',
+    'base64.cpp',
+    'Exception.cpp',
+    'hash/sha256.cpp',
+    include_directories: [include],
+    install: true,
+)

test/Exception.cpp

@@ -0,0 +1,29 @@
+#include <basen/Exception.hpp>
+#include <gtest/gtest.h>
+
+TEST(Exception, Exception)
+{
+    EXPECT_ANY_THROW(throw basen::Exception(basen::Exception::Code::BASE));
+}
+TEST(Exception, message)
+{
+    try
+    {
+        throw basen::Exception(basen::Exception::Code::BASE);
+    }
+    catch (const basen::Exception &e)
+    {
+        EXPECT_STREQ(e.message(), "incorrect base");
+    }
+}
+TEST(Exception, code)
+{
+    try
+    {
+        throw basen::Exception(basen::Exception::Code::BASE);
+    }
+    catch (const basen::Exception &e)
+    {
+        EXPECT_EQ(uint32_t(e.code()), uint32_t(basen::Exception::Code::BASE));
+    }
+}

test/base58.cpp

@@ -0,0 +1,23 @@
+#include <utility>
+
+#include <basen/base58.hpp>
+#include <basen/Exception.hpp>
+#include <basen/hex.hpp>
+#include <gtest/gtest.h>
+
+using namespace base58;
+
+std::pair<std::string, std::string> test = {
+    "003812e515df45235c6bcc2233ac9d0c4ebbd781de",
+    "167VUagc755PbQoB7cCTfTPjbQ5Nk6fEuD",
+};
+
+TEST(base58, encodeCheck)
+{
+    EXPECT_EQ(encodeCheck(hex::decode(test.first)), test.second);
+}
+TEST(base58, decodeCheck)
+{
+    EXPECT_EQ(test.first, hex::encode(decodeCheck(test.second)));
+    EXPECT_THROW(decodeCheck("incorrect"), basen::Exception);
+}

test/base64.cpp

@@ -0,0 +1,61 @@
+#include <utility>
+
+#include <basen/base64.hpp>
+#include <basen/Exception.hpp>
+#include <basen/hex.hpp>
+#include <gtest/gtest.h>
+
+namespace base64 {
+  
+  TEST(base64, isValid)
+  {
+      std::vector<std::pair<bool, std::string>> tests = {
+          {true, "12=="},
+          {true, "123="},
+          {true, "1234"},
+          {false, "1==="},
+          {false, "?!*"},
+      };
+      for (auto it : tests)
+          EXPECT_EQ(it.first, isValid(it.second));
+  }
+  std::vector<std::pair<std::string, std::string>> tests = {
+      {"", ""},
+      {"BKUEpQ==", "04a504a5"},
+      {"aGVsbG8=", "68656c6c6f"},
+      {"aGVsbG9v", "68656c6c6f6f"},
+  };
+  TEST(base64, encode)
+  {
+      for (auto it : tests)
+          EXPECT_EQ(it.first, encode(hex::decode(it.second)));
+
+      std::vector<uint8_t> data = {0x74, 0x65, 0x73, 0x74};
+      std::string str = "";
+      EXPECT_THROW(encode(data.data(), std::numeric_limits<size_t>::max(), str.data(), str.size()), basen::Exception);
+      EXPECT_THROW(encode(data.data(), data.size(), str.data(), str.size()), basen::Exception);
+      EXPECT_NO_THROW(encode(data.data(), 0, str.data(), str.size()));
+  }
+  TEST(base64, encode_1e7)
+  {
+      std::vector<uint8_t> data(1e7);
+      encode(data);
+  }
+  TEST(base64, decode)
+  {
+      for (auto it : tests)
+          EXPECT_EQ(hex::encode(decode(it.first)), it.second);
+
+      std::vector<uint8_t> data = {0x61, 0x6e, 0x6f};
+      EXPECT_THROW(decode("FFF", 3, data.data(), data.size()), basen::Exception);
+      EXPECT_THROW(decode("!@#!", 4, data.data(), data.size()), basen::Exception);
+      EXPECT_THROW(decode("FF==", 2, data.data(), 0), basen::Exception);
+      EXPECT_NO_THROW(decode("", 0, data.data(), 0));
+  }
+  TEST(base64, decode_1e7)
+  {
+      std::string str(1e7, '0');
+      decode(str);
+  }
+
+}

test/baseN.cpp

@@ -0,0 +1,85 @@
+#include <utility>
+
+#include <basen/base58.hpp>
+#include <basen/baseN.hpp>
+#include <basen/Exception.hpp>
+#include <basen/hex.hpp>
+#include <gtest/gtest.h>
+
+namespace baseN {
+
+  TEST(baseN, digitsMap)
+  {
+      uint8_t map[256];
+      digitsMap(base58::digits, 58, map);
+      EXPECT_TRUE(std::equal(map, map + 256, base58::map));
+
+      EXPECT_THROW(digitsMap("11", 2, map), basen::Exception);
+  }
+  TEST(baseN, isValid)
+  {
+      std::vector<std::pair<bool, std::string>> tests = {
+          {true, "123"},
+          {false, "@#$"},
+      };
+      for (auto it : tests)
+          EXPECT_EQ(it.first, isValid(it.second, base58::map));
+  }
+  TEST(baseN, sizeEncoded)
+  {
+      std::vector<std::pair<size_t, std::string>> tests = {
+          {6, "12341234"},
+          {5, "00000000"},
+      };
+         for (auto it : tests)
+          EXPECT_EQ(it.first, sizeEncoded(hex::decode(it.second), 58));
+
+      EXPECT_THROW(sizeEncoded(hex::decode(""), 0), basen::Exception);
+  }
+  TEST(baseN, sizeDecoded)
+  {
+      std::vector<std::pair<size_t, std::string>> tests = {
+          {3, "qwer"},
+          {5, "1111"},
+      };
+      for (auto it : tests)
+          EXPECT_EQ(it.first, sizeDecoded(it.second, 58, base58::digits));
+
+      EXPECT_THROW(sizeDecoded("", 0, base58::digits), basen::Exception);
+  }
+  std::vector<std::pair<std::string, std::string>> tests = {
+      {"", ""},
+      {"Ky", "044c"},
+      {"KyK", "f94a"},
+      {"KyKX", "387ae2"},
+      {"KyKXa", "0ccbd755"},
+      {"KyKXaa", "02e62ec963"},
+      {"111KyKX", "000000387ae2"},
+      {"4uqWDRyJZUpS6KKwLAiitndmv7TPFt2bfxVVfhJhgTn3Rh6aQtGHQY6PhhNDpCwSNU8a",
+       "057902f9cebebb68879911002aae743280140a78c4a077405b057902f9cebebb68879911002aae743280140a78c4a077405b"},
+  };
+  TEST(baseN, encode)
+  {
+      for (auto it : tests)
+          EXPECT_EQ(it.first, encode(hex::decode(it.second), 58, base58::digits));
+  }
+  TEST(baseN, encode_1e3)
+  {
+      std::vector<uint8_t> data(1e3);
+      std::fill(data.begin(), data.end(), 1);
+      encode(data, 58, base58::digits);
+  }
+  TEST(baseN, decode)
+  {
+      for (auto it : tests)
+          EXPECT_EQ(hex::encode(decode(it.first, 58, base58::digits, base58::map)), it.second);
+
+      EXPECT_THROW(decode("!@#", 58, base58::digits, base58::map), basen::Exception);
+  }
+  TEST(baseN, decode_1e3)
+  {
+      std::string str(1e3, '2');
+      decode(str, 58, base58::digits, base58::map);
+  }
+
+}

test/hash/sha256.cpp

@@ -1,5 +1,5 @@
-#include <base/hash/sha256.hpp>
-#include <base/hex.hpp>
+#include <basen/hash/sha256.hpp>
+#include <basen/hex.hpp>
 #include <gtest/gtest.h>
 
 using namespace hash;
@@ -11,14 +11,8 @@ TEST(hash, sha256)
 TEST(hash, sha256_1e4)
 {
     std::vector<uint8_t> data(32);
-    for (uint64_t i = 0; i < 1e4; i++)
+    for (size_t i = 0; i < 1e4; i++)
     {
         sha256(data);
     }
 }
-
-int main(int argc, char **argv)
-{
-    testing::InitGoogleTest(&argc, argv);
-    return RUN_ALL_TESTS();
-}

test/hex.cpp

@@ -0,0 +1,47 @@
+#include <utility>
+
+#include <basen/Exception.hpp>
+#include <basen/hex.hpp>
+#include <gtest/gtest.h>
+
+using namespace hex;
+
+TEST(hex, isValid)
+{
+    std::vector<std::pair<bool, std::string>> tests = {
+        {true, "1234"},
+        {false, "!@/"},
+    };
+    for (auto it : tests)
+        EXPECT_EQ(it.first, isValid(it.second));
+}
+TEST(hex, encode)
+{
+    std::vector<uint8_t> data = {0x74, 0x65, 0x73, 0x74};
+    EXPECT_EQ("74657374", encode(data));
+
+    std::string str = "";
+    EXPECT_THROW(encode(data.data(), std::numeric_limits<size_t>::max(), str.data(), str.size()), basen::Exception);
+    EXPECT_THROW(encode(data.data(), data.size(), str.data(), str.size()), basen::Exception);
+    EXPECT_NO_THROW(encode(data.data(), 0, str.data(), str.size()));
+}
+TEST(hex, encode_1e7)
+{
+    std::vector<uint8_t> data(1e7);
+    encode(data);
+}
+TEST(hex, decode)
+{
+    std::vector<uint8_t> data = {0x61, 0x6e, 0x6f};
+    EXPECT_EQ(decode("616e6f"), data);
+
+    EXPECT_THROW(decode("FFF", 3, data.data(), data.size()), basen::Exception);
+    EXPECT_THROW(decode("!@#!", 4, data.data(), data.size()), basen::Exception);
+    EXPECT_THROW(decode("FF", 2, data.data(), 0), basen::Exception);
+    EXPECT_NO_THROW(decode("", 0, data.data(), 0));
+}
+TEST(hex, decode_1e7)
+{
+    std::string str(1e7, '0');
+    decode(str);
+}

test/meson.build

@@ -0,0 +1,14 @@
+gtest_dep = dependency('gtest', main: true)
+
+test_exe = executable(
+    'test_exe',
+    'hex.cpp',
+    'baseN.cpp',
+    'base58.cpp',
+    'base64.cpp',
+    'Exception.cpp',
+    'hash/sha256.cpp',
+    dependencies: [basen_dep, gtest_dep],
+)
+
+test('lib', test_exe)

test/test-base64.cpp

@@ -1,45 +0,0 @@
-#include <base/base64.hpp>
-#include <base/hex.hpp>
-#include <gtest/gtest.h>
-
-using namespace base64;
-
-TEST(base64, isValid)
-{
-    EXPECT_TRUE(isValid("12=="));
-    EXPECT_TRUE(isValid("123="));
-    EXPECT_TRUE(isValid("1234"));
-
-    EXPECT_FALSE(isValid("1==="));
-    EXPECT_FALSE(isValid("?!*"));
-}
-TEST(base64, encode)
-{
-    EXPECT_EQ(encode(hex::decode("")), "");
-    EXPECT_EQ(encode(hex::decode("04a504a5")), "BKUEpQ==");
-    EXPECT_EQ(encode(hex::decode("04a504a500")), "BKUEpQA=");
-    EXPECT_EQ(encode(hex::decode("04a504a50000")), "BKUEpQAA");
-}
-TEST(base64, encode_1e7)
-{
-    std::vector<uint8_t> data(1e7);
-    encode(data);
-}
-TEST(base64, decode)
-{
-    EXPECT_EQ(hex::encode(decode("")), "");
-    EXPECT_EQ(hex::encode(decode("BKUEpQ==")), "04a504a5");
-    EXPECT_EQ(hex::encode(decode("BKUEpQA=")), "04a504a500");
-    EXPECT_EQ(hex::encode(decode("BKUEpQAA")), "04a504a50000");
-}
-TEST(base64, decode_1e7)
-{
-    std::string str(1e7, '0');
-    decode(str);
-}
-
-int main(int argc, char **argv)
-{
-    testing::InitGoogleTest(&argc, argv);
-    return RUN_ALL_TESTS();
-}

test/test-baseN.cpp

@@ -1,66 +0,0 @@
-#include <base/baseN.hpp>
-#include <base/hex.hpp>
-#include <gtest/gtest.h>
-
-using namespace baseN;
-
-static const char b58digits[] =
-    "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
-
-static const int8_t b58map[] = {
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, -1, -1, -1, -1, -1, -1,
-    -1, 9, 10, 11, 12, 13, 14, 15, 16, -1, 17, 18, 19, 20, 21, -1,
-    22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, -1, -1, -1, -1, -1,
-    -1, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, -1, 44, 45, 46,
-    47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    //
-};
-
-TEST(baseN, isValid)
-{
-    EXPECT_EQ(true, isValid("123", b58map));
-    EXPECT_EQ(false, isValid("@#$", b58map));
-}
-// TEST(baseN, encode)
-// {
-//     EXPECT_EQ("Ky", encode(hex::decode("044c"), 58, b58digits));
-//     EXPECT_EQ("KyK", encode(hex::decode("f94a"), 58, b58digits));
-//     EXPECT_EQ("KyKX", encode(hex::decode("387ae2"), 58, b58digits));
-//     EXPECT_EQ("KyKXa", encode(hex::decode("0ccbd755"), 58, b58digits));
-//     EXPECT_EQ("KyKXaa", encode(hex::decode("02e62ec963"), 58, b58digits));
-// }
-// TEST(baseN, encode_1e3)
-// {
-//     std::vector<uint8_t> data(1e3);
-//     encode(data, 58, b58digits, data.size() * 138 / 100 + 1);
-// }
-// TEST(baseN, decode)
-// {
-//     EXPECT_EQ(hex::encode(decode("Ky", 58, b58digits, b58map)), "044c");
-//     EXPECT_EQ(hex::encode(decode("KyK", 58, b58digits, b58map)), "f94a");
-//     EXPECT_EQ(hex::encode(decode("KyKX", 58, b58digits, b58map)), "387ae2");
-//     EXPECT_EQ(hex::encode(decode("KyKXa", 58, b58digits, b58map)), "0ccbd755");
-//     EXPECT_EQ(hex::encode(decode("KyKXaa", 58, b58digits, b58map)), "02e62ec963");
-// }
-// TEST(baseN, decode_1e4)
-// {
-//     std::string str(1e4, '1');
-//     decode(str, 58, b58digits, b58map, str.size() * 733 / 1000 + 1);
-// }
-
-int main(int argc, char **argv)
-{
-    testing::InitGoogleTest(&argc, argv);
-    return RUN_ALL_TESTS();
-}

test/test-hex.cpp

@@ -1,49 +0,0 @@
-#include <base/hex.hpp>
-#include <gtest/gtest.h>
-
-using namespace hex;
-
-TEST(hex, encode)
-{
-    std::vector<uint8_t> data = {0x74, 0x65, 0x73, 0x74};
-    EXPECT_EQ("74657374", encode(data));
-    try
-    {
-        std::string str = "";
-        encode(data.data(), data.size(), str.data(), str.size());
-    }
-    catch (const std::exception &e)
-    {
-        EXPECT_STREQ(e.what(), "hex::encode: not enough allocated length");
-    }
-}
-TEST(hex, encode_1e7)
-{
-    std::vector<uint8_t> data(1e7);
-    encode(data);
-}
-TEST(hex, decode)
-{
-    std::vector<uint8_t> data = {0x61, 0x6e, 0x6f};
-    EXPECT_EQ(decode("616e6f"), data);
-    try
-    {
-        std::string str = "";
-        decode("616", 3, data.data(), data.size());
-    }
-    catch (const std::exception &e)
-    {
-        EXPECT_STREQ(e.what(), "hex::decode: isn't hex");
-    }
-}
-TEST(hex, decode_1e7)
-{
-    std::string str(1e7, '0');
-    decode(str);
-}
-
-int main(int argc, char **argv)
-{
-    testing::InitGoogleTest(&argc, argv);
-    return RUN_ALL_TESTS();
-}

tools/basen.cpp

@@ -0,0 +1,156 @@
+#include <iostream>
+#include <unordered_map>
+
+#include <argparse/argparse.hpp>
+
+#include <basen.hpp>
+#include <config.hpp>
+
+#ifdef _WIN32
+#include <io.h>
+#include <fcntl.h>
+#else
+#include <unistd.h>
+#endif
+
+namespace basen
+{
+    typedef std::string (*encoder_t)(std::span<const uint8_t>);
+    typedef std::vector<uint8_t> (*decoder_t)(std::string_view);
+
+    const std::unordered_map<std::string, encoder_t> encoders = {
+        {"base58", base58::encode},
+        {"base58check", base58::encodeCheck},
+        {"base64", base64::encode},
+        {"hex", hex::encode},
+    };
+    const std::unordered_map<std::string, decoder_t> decoders = {
+        {"base58", base58::decode},
+        {"base58check", base58::decodeCheck},
+        {"base64", base64::decode},
+        {"hex", hex::decode},
+    };
+
+    std::string getPipe()
+    {
+        std::string str;
+        str.reserve(1024 * 1024);
+#ifdef _WIN32
+        if (_isatty(_fileno(stdin)))
+#else
+        if (isatty(fileno(stdin)))
+#endif
+        {
+            throw std::logic_error("should use pipe syntax ( | or < )");
+        }
+        else
+        {
+            char temp[4096];
+            while (std::cin.read(temp, sizeof(temp)))
+            {
+                str.insert(str.end(), temp, temp + std::cin.gcount());
+            }
+            str.insert(str.end(), temp, temp + std::cin.gcount());
+        }
+        if (!str.empty() && str.back() == '\n')
+        {
+            str.erase(str.size() - 1);
+        }
+        return str;
+    }
+    uint8_t error(const std::string &str, argparse::ArgumentParser &program) noexcept
+    {
+        std::cerr << "\033[31merror:\t\033[0m"
+                  << str << "\n\n"
+                  << program << '\n';
+        return 1;
+    }
+}
+
+int main(int argc, char *argv[])
+{
+    argparse::ArgumentParser program("basen", "1.1.0");
+    program.add_argument("-t", "--type")
+        .help("encoding type")
+        .metavar("STRING")
+        .choices("base58", "base58check", "base64", "hex");
+    program.add_argument("-a", "--alphabet")
+        .help("specify alphabet")
+        .metavar("STRING");
+    program.add_argument("-d", "--decode")
+        .help("decode flag")
+        .flag();
+    program.add_argument("-v", "--version")
+        .flag();
+    try
+    {
+        program.parse_args(argc, argv);
+    }
+    catch (const std::exception &err)
+    {
+        return basen::error(err.what(), program);
+    }
+    if (program.is_used("-v")) {
+        std::cout << BASEN_VER_STR << std::endl;
+        return 0;
+    }
+    if (!program.is_used("-t") && !program.is_used("-a"))
+    {
+        return basen::error("either -t or -a should be provided", program);
+    }
+    if (program.is_used("-t") && program.is_used("-a"))
+    {
+        return basen::error("-t and -a cannot be used together", program);
+    }
+    std::string str;
+    try
+    {
+        str = basen::getPipe();
+    }
+    catch (const std::exception &e)
+    {
+        return basen::error(e.what(), program);
+    }
+    try
+    {
+        if (program.is_used("-t"))
+        {
+            auto type = program.get<std::string>("-t");
+            if (program.is_used("-d"))
+            {
+                auto data = (*basen::decoders.at(type))(str);
+                std::for_each(data.begin(), data.end(), [](uint8_t item)
+                              { std::cout << (char)item; });
+                std::cout << '\n';
+            }
+            else
+            {
+                std::span<uint8_t> dv((uint8_t *)str.data(), str.size());
+                std::cout << (*basen::encoders.at(type))(dv) << '\n';
+            }
+        }
+        if (program.is_used("-a"))
+        {
+            auto alphabet = program.get<std::string>("-a");
+            uint8_t map[256];
+            baseN::digitsMap(alphabet.data(), alphabet.size(), map);
+            if (program.is_used("-d"))
+            {
+                auto data = baseN::decode(str, alphabet.size(), alphabet.data(), map);
+                std::for_each(data.begin(), data.end(), [](uint8_t item)
+                              { std::cout << (char)item; });
+                std::cout << '\n';
+            }
+            else
+            {
+                std::span<uint8_t> dv((uint8_t *)str.data(), str.size());
+                std::cout << baseN::encode(dv, alphabet.size(), alphabet.data()) << '\n';
+            }
+        }
+    }
+    catch (const basen::Exception &e)
+    {
+        return basen::error(e.message(), program);
+    }
+    return 0;
+}

tools/meson.build

@@ -0,0 +1,8 @@
+argparse_dep = dependency('argparse')
+
+executable(
+    'basen',
+    'basen.cpp',
+    dependencies: [basen_dep, argparse_dep],
+    install: true,
+)